adopts mini USB interface&comma; compact structure&comma; portable and easy-operating&period; X4 supports 2 card slot&period; Main card slot is suitable for common working mode&comma; supplementary card slot can be easily inserted to certification and management&period; As a necessary front-end processing equipment of IC card system integration&comma; X4 mostly increase the system's security and convenience of applications&comma; as well as make it better in smart card management&application systems like card&comma; charge&comma; stored-value&comma; query service in mobile&comma; telecommunications&comma; post&comma; bank&comma; insurance&period;&period;&period;

Provide function library of universal interfaces&comma; and support various of operating systems& language development platform&semi; Support online upgrade function&semi; Provide development and customization of middle-ware&comma; such as CSP&comma; PKCS&num;11&semi; Provide security software's applications and customization&comma; like Windows Login and VPN&period;&period;&period;